Render inband text tracks in the media pipeline

media/filters/chunk_demuxer.h

Index: media/filters/chunk_demuxer.h
diff --git a/media/filters/chunk_demuxer.h b/media/filters/chunk_demuxer.h
index e7f6caed37c9c4ab0eab72d3329b35688b38f907..78bd5daadf3c77dbbadef2179e441bc9a97f78aa 100644
--- a/media/filters/chunk_demuxer.h
+++ b/media/filters/chunk_demuxer.h
@@ -6,6 +6,7 @@
 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_
 
 #include <map>
+#include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ -15,7 +16,6 @@
 #include "media/base/demuxer.h"
 #include "media/base/ranges.h"
 #include "media/base/stream_parser.h"
-#include "media/base/text_track.h"
 #include "media/filters/source_buffer_stream.h"
 
 namespace media {
@@ -38,13 +38,13 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
   //   is ready to receive media data via AppenData().
   // |need_key_cb| Run when the demuxer determines that an encryption key is
   //   needed to decrypt the content.
-  // |add_text_track_cb| Run when demuxer detects the presence of an inband
-  //   text track.
+  // |enable_text| Process inband text tracks in the normal way when true,
+  //   otherwise ignore them.
   // |log_cb| Run when parsing error messages need to be logged to the error
   //   console.
   ChunkDemuxer(const base::Closure& open_cb,
                const NeedKeyCB& need_key_cb,
-               const AddTextTrackCB& add_text_track_cb,
+               bool enable_text,
                const LogCB& log_cb);
   virtual ~ChunkDemuxer();
 
@@ -171,8 +171,10 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
   // has not been created before. Returns NULL otherwise.
   ChunkDemuxerStream* CreateDemuxerStream(DemuxerStream::Type type);
 
-  bool OnTextBuffers(TextTrack* text_track,
-                     const StreamParser::BufferQueue& buffers);
+  void OnNewTextTrack(ChunkDemuxerStream* text_stream,
+                      TextKind kind,
+                      const std::string& name,
+                      const std::string& language);
   void OnNewMediaSegment(const std::string& source_id,
                          base::TimeDelta start_timestamp);
 
@@ -224,7 +226,7 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
   DemuxerHost* host_;
   base::Closure open_cb_;
   NeedKeyCB need_key_cb_;
-  AddTextTrackCB add_text_track_cb_;
+  bool enable_text_;
   // Callback used to report error strings that can help the web developer
   // figure out what is wrong with the content.
   LogCB log_cb_;
@@ -235,6 +237,9 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
   scoped_ptr<ChunkDemuxerStream> audio_;
   scoped_ptr<ChunkDemuxerStream> video_;
 
+  typedef std::set<ChunkDemuxerStream*> TextStreamSet;
+  TextStreamSet text_stream_set_;
+
   // Keeps |audio_| alive when audio has been disabled.
   scoped_ptr<ChunkDemuxerStream> disabled_audio_;